No, "Die haben keinen Stuhl" would be correct if you wanted to say, they don't have a chair. But I suspect it's not "Die" but "Sie". you don't have a chair. Also, "chair" is a noun and capitalized in German.
Ensuring that risks are reasonable in relationship to anticipated benefits. ... The Public Health Service Tuskegee Study of Untreated Syphilis in the Negro Male
